Portion of a putter head



FIG. 1 is a top, front perspective view of a portion of a putter head showing my new design.

FIG. 2 is a top, rear perspective view thereof.

FIG. 3 is a top plan view thereof.

FIG. 4 is a front elevational view thereof.

FIG. 5 is a rear elevational view thereof.

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof.

The broken line showing of various portions of the putter head is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a putter head, as shown and described. 